#!/bin/bash

# Slackware build script for nchexedit

# Written by B. Watson (urchlay@slackware.uk)

# Licensed under the WTFPL. See http://www.wtfpl.net/txt/copying/ for details.

# There's already a 'hexedit' on SBo (a completely different program).
# This one's full name is "[N] Curses Hexedit" so I'm packaging it
# as nchexedit.

# We're using most of Debian's patches, the _5 in VERSION is their
# patchlevel.

# 20210905 bkw: update for v0.9.7_7.1, fix -current segfault issue.

cd $(dirname $0) ; CWD=$(pwd)

PRGNAM=nchexedit
VERSION=${VERSION:-0.9.7_7.1}
BUILD=${BUILD:-1}
TAG=${TAG:-_SBo}
PKGTYPE=${PKGTYPE:-tgz}

SRCNAM=hexedit
SRCVER="$( echo $VERSION | cut -d_ -f1 )"
DEBNAME="ncurses-$SRCNAM"
DEBVER="$( echo $VERSION | cut -d_ -f2 )"

if [ -z "$ARCH" ]; then
  case "$( uname -m )" in
    i?86) ARCH=i586 ;;
    arm*) ARCH=arm ;;
       *) ARCH=$( uname -m ) ;;
  esac
fi

if [ ! -z "${PRINT_PACKAGE_NAME}" ]; then
  echo "$PRGNAM-$VERSION-$ARCH-$BUILD$TAG.$PKGTYPE"
  exit 0
fi

TMP=${TMP:-/tmp/SBo}
PKG=$TMP/package-$PRGNAM
OUTPUT=${OUTPUT:-/tmp}

if [ "$ARCH" = "i586" ]; then
  SLKCFLAGS="-O2 -march=i586 -mtune=i686"
  LIBDIRSUFFIX=""
elif [ "$ARCH" = "i686" ]; then
  SLKCFLAGS="-O2 -march=i686 -mtune=i686"
  LIBDIRSUFFIX=""
elif [ "$ARCH" = "x86_64" ]; then
  SLKCFLAGS="-O2 -fPIC"
  LIBDIRSUFFIX="64"
else
  SLKCFLAGS="-O2"
  LIBDIRSUFFIX=""
fi

set -e

rm -rf $PKG
mkdir -p $TMP $PKG $OUTPUT
cd $TMP
rm -rf $SRCNAM-$SRCVER
tar xvf $CWD/$SRCNAM-$SRCVER.tar.gz
cd $SRCNAM-$SRCVER

# Include most of Debian's patches. They rename the binary to 'hexeditor'
# so we leave out the patches related to that, and a couple others that
# are unnecessary. The ones we apply are bugfixes, a couple of which are
# crucial (search command didn't work on 64-bit, buffer overruns, segfault
# if the terminal's too small), and the rest are valid but nitpicky.
tar xvf $CWD/${DEBNAME}_${SRCVER}+orig-${DEBVER}.debian.tar.xz
rm -f debian/patches/fix_hexedit_references.patch \
      debian/patches/hexedit_lsm.patch \
      debian/patches/hurd_path_max.patch \
      debian/patches/info_dir_section.patch \
      debian/patches/rename_binaries.patch \
      debian/patches/autoconf_2.69.patch \
      debian/patches/fix_its_typo.patch \
      debian/patches/fix_spelling_errors.patch

chown -R root:root .
find -L .  -perm /111 -a \! -perm 755 -a -exec chmod 755 {} \+ -o \
        \! -perm /111 -a \! -perm 644 -a -exec chmod 644 {} \+

# Apply the patches we didn't rm.
for i in $( cat debian/patches/series ); do
  P=debian/patches/$i
  [ -e $P ] && echo "=== $P" && patch -p1 < $P
done

# Reworked version of Debian patch.
patch -p1 < $CWD/fix_its_typo.patch

# --program-prefix doesn't change the contents of the man page
sed -i \
  -e 's/hexedit/nchexedit/g' \
  -e 's/Hexedit/NCHexedit/g' \
  -e 's/HEXEDIT/NCHEXEDIT/g' \
  -e '/utexas\.edu/s#{http[^}]*}#{https://www.rogoyski.com/adam/programs/hexedit/}#' \
  docs/$SRCNAM.1

# ...nor the info file.
sed -i \
  -e 's/hexedit/nchexedit/g' \
  -e '/utexas\.edu/s#{http[^}]*}#{https://www.rogoyski.com/adam/programs/hexedit/}#' \
  docs/$SRCNAM.texinfo

# 20210905 bkw: required for -current (but why?). Without this, it segfaults
# on startup.
sed -i 's,-lncurses,-lncursesw,g' configure

SLKCFLAGS+=" -fcommon"

CFLAGS="$SLKCFLAGS" \
CXXFLAGS="$SLKCFLAGS" \
./configure \
  --program-prefix=nc \
  --prefix=/usr \
  --libdir=/usr/lib${LIBDIRSUFFIX} \
  --sysconfdir=/etc \
  --localstatedir=/var \
  --mandir=/usr/man \
  --build=$ARCH-slackware-linux

make
make install-strip DESTDIR=$PKG
gzip -9 $PKG/usr/man/man1/$PRGNAM.1

# info file fails to install with --program-prefix, do it manually.
rm -f $PKG/usr/info/*
gzip -9c docs/$PRGNAM.info > $PKG/usr/info/$PRGNAM.info.gz

mkdir -p $PKG/usr/doc/$PRGNAM-$VERSION
cp -a AUTHORS COPYING ChangeLog NEWS README $PKG/usr/doc/$PRGNAM-$VERSION
cat $CWD/$PRGNAM.SlackBuild > $PKG/usr/doc/$PRGNAM-$VERSION/$PRGNAM.SlackBuild

mkdir -p $PKG/install
cat $CWD/slack-desc > $PKG/install/slack-desc
cat $CWD/doinst.sh > $PKG/install/doinst.sh

cd $PKG
/sbin/makepkg -l y -c n $OUTPUT/$PRGNAM-$VERSION-$ARCH-$BUILD$TAG.$PKGTYPE
